"priv->ext_config_dev_aspm" was never set to a non-zero value. Therefore,
alcor_pci_aspm_ctrl(priv, 1) did nothing, and alcor_pci_aspm_ctrl(priv, 0)
always disabled ASPM in the device and the upstream bridge.
The driver disabled ASPM in alcor_pci_probe() and alcor_resume(), so it's
possible the device doesn't work well when ASPM is enabled.
Remove all the ASPM-related code and replace the alcor_pci_aspm_ctrl(0)
calls with pci_disable_link_state(pdev, PCIE_LINK_STATE_L0S |
PCIE_LINK_STATE_L1), which asks the PCI core to disable ASPM.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Cc: Oleksij Rempel <o.rempel@pengutronix.de>
Reviewed-by: Oleksij Rempel <o.rempel@pengutronix.de>
Link: https://lore.kernel.org/r/20230307213816.886308-1-helgaas@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Set return value in rsp_buf alloc error path before going to
error handling.
drivers/misc/cardreader/rtsx_usb.c:639:6: warning: variable 'ret' is used uninitialized whenever 'if' condition is true [-Wsometimes-uninitialized]
if (!ucr->rsp_buf)
^~~~~~~~~~~~~
drivers/misc/cardreader/rtsx_usb.c:678:9: note: uninitialized use occurs here
return ret;
^~~
drivers/misc/cardreader/rtsx_usb.c:639:2: note: remove the 'if' if its condition is always false
if (!ucr->rsp_buf)
^~~~~~~~~~~~~~~~~~
drivers/misc/cardreader/rtsx_usb.c:622:9: note: initialize the variable 'ret' to silence this warning
int ret;
^
= 0
Fixes: 3776c78559 ("misc: rtsx_usb: use separate command and response buffers")
Reported-by: kernel test robot <lkp@intel.com>
Cc: stable <stable@kernel.org>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
Link: https://lore.kernel.org/r/20220701165352.15687-1-skhan@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
rtsx_usb uses same buffer for command and response. There could
be a potential conflict using the same buffer for both especially
if retries and timeouts are involved.
Use separate command and response buffers to avoid conflicts.
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
Cc: stable <stable@kernel.org>
Link: https://lore.kernel.org/r/07e3721804ff07aaab9ef5b39a5691d0718b9ade.1656642167.git.skhan@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
If an error occurs after a successful idr_alloc() call, the corresponding
resource must be released with idr_remove() as already done in the .remove
function.
Update the error handling path to add the missing idr_remove() call.
Fixes: ada8a8a13b ("mfd: Add realtek pcie card reader driver")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://lore.kernel.org/r/e8dc41716cbf52fb37a12e70d8972848e69df6d6.1655271216.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Clang warns:
drivers/misc/cardreader/rts5261.c:406:13: error: variable 'setting_reg2' is used uninitialized whenever 'if' condition is false [-Werror,-Wsometimes-uninitialized]
} else if (efuse_valid == 0) {
^~~~~~~~~~~~~~~~
drivers/misc/cardreader/rts5261.c:412:30: note: uninitialized use occurs here
pci_read_config_dword(pdev, setting_reg2, &lval2);
^~~~~~~~~~~~
efuse_valid == 1 is not a valid value so just return early from the
function to avoid using setting_reg2 uninitialized.
Fixes: b1c5f30851 ("misc: rtsx: add rts5261 efuse function")
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Tom Rix <trix@redhat.com>
Suggested-by: Ricky WU <ricky_wu@realtek.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Link: https://lore.kernel.org/r/20220523150521.2947108-1-nathan@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
alcor_pci doesn't set driver data to NULL and clear pci master when
probe fails. Doesn't clear pci master from remove interface. Clearing
pci master is necessary to disable bus mastering and prevent DMAs after
driver removal.
Fix alcor_pci_probe() to set driver data to NULL and clear pci master
from its error path. Fix alcor_pci_remove() to clear pci master.
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
Link: https://lore.kernel.org/r/20220517203630.45232-1-skhan@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
rtsx_usb_probe() doesn't call usb_set_intfdata() to null out the
interface pointer when probe fails. This leaves a stale pointer.
Noticed the missing usb_set_intfdata() while debugging an unrelated
invalid DMA mapping problem.
Fix it with a call to usb_set_intfdata(..., NULL).
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
Link: https://lore.kernel.org/r/20220429210913.46804-1-skhan@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
move rts5261_fetch_vendor_settings() to rts5261_init_from_hw()
make sure it be called from S3 or D3
add more register setting when efuse is set
read efuse setting to register on init flow
Signed-off-by: Ricky Wu <Ricky_wu@realtek.com>
Link: https://lore.kernel.org/r/18101ecb0f0749ccb9f564eda171ba40@realtek.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
rts522a, rts5228, rts5261
add extra init flow for rtd3
add more power_down setting for avoid being woken up
by plugging or unplugging card when system in S3
Tested-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Signed-off-by: Ricky Wu <ricky_wu@realtek.com>
Link: https://lore.kernel.org/r/dace32f573a445908fec0a10482c394c@realtek.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
On s390 allyesconfig, there is this build error
rtsx_pcr.c:1084:13: error: 'rtsx_pm_power_saving'
defined but not used
1084 | static void rtsx_pm_power_saving(struct rtsx_pcr *pcr)
| ^~~~~~~~~~~~~~~~~~~~
rtsx_pm_power_saving() is only used by rtsx_pci_runtime_idle()
which is conditional on CONFIG_PM. So conditionally build
rtsx_pm_power_saving() and the similar
rtsx_comm_pm_power_saving() and rtsx_enable_aspm().
Signed-off-by: Tom Rix <trix@redhat.com>
Link: https://lore.kernel.org/r/20220213171907.2786442-1-trix@redhat.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
A successful ida_simple_get() should be balanced by a corresponding
ida_simple_remove().
Add the missing call in the error handling path of the probe.
While at it, switch to ida_alloc()/ida_free() instead to
ida_simple_get()/ida_simple_remove().
The latter is deprecated and more verbose.
Fixes: 4f556bc04e ("misc: cardreader: add new Alcor Micro Cardreader PCI driver")
Reviewed-by: Oleksij Rempel <o.rempel@pengutronix.de>
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://lore.kernel.org/r/918a9875b7f67b7f8f123c4446452603422e8c5e.1644136776.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
- Use cancel_delayed_work_sync to ensure there's no race with
carddet_work.
- Remove device_wakeup_disable to save some CPU cycles. If the device
really has ACPI _DSW then the wakeup should be disabled in probe
routine.
- Remove fetch_vendor_settings from runtime resume routine, since they
are already saved in "struct rtsx_pcr".
- Move variable assignments to the top of the functions.
Cc: Ricky WU <ricky_wu@realtek.com>
Tested-by: Ricky WU <ricky_wu@realtek.com>
Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Link: https://lore.kernel.org/r/20220125055010.1866563-3-kai.heng.feng@canonical.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Commit 5b4258f672 ("misc: rtsx: rts5249 support runtime PM")
uses "rtd3_work" and "idle_work" to manage it's own runtime PM state
machine.
When its child device, rtsx_pci_sdmmc, uses runtime PM refcount
correctly, all the additional works can be managed by generic runtime PM
helpers.
So consolidate "idle_work" and "rtd3_work" into generic runtime idle
callback and runtime suspend callback, respectively.
Fixes: 5b4258f672 ("misc: rtsx: rts5249 support runtime PM")
Cc: Ricky WU <ricky_wu@realtek.com>
Tested-by: Ricky WU <ricky_wu@realtek.com>
Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Link: https://lore.kernel.org/r/20220125055010.1866563-2-kai.heng.feng@canonical.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
After commit 5b4258f672 ("misc: rtsx: rts5249 support runtime PM"), when the
rtsx controller is runtime suspended, bring CPUs offline and back online, the
runtime resume of the controller will fail:
[ 47.319391] smpboot: CPU 1 is now offline
[ 47.414140] x86: Booting SMP configuration:
[ 47.414147] smpboot: Booting Node 0 Processor 1 APIC 0x2
[ 47.571334] smpboot: CPU 2 is now offline
[ 47.686055] smpboot: Booting Node 0 Processor 2 APIC 0x4
[ 47.808174] smpboot: CPU 3 is now offline
[ 47.878146] smpboot: Booting Node 0 Processor 3 APIC 0x6
[ 48.003679] smpboot: CPU 4 is now offline
[ 48.086187] smpboot: Booting Node 0 Processor 4 APIC 0x1
[ 48.239627] smpboot: CPU 5 is now offline
[ 48.326059] smpboot: Booting Node 0 Processor 5 APIC 0x3
[ 48.472193] smpboot: CPU 6 is now offline
[ 48.574181] smpboot: Booting Node 0 Processor 6 APIC 0x5
[ 48.743375] smpboot: CPU 7 is now offline
[ 48.838047] smpboot: Booting Node 0 Processor 7 APIC 0x7
[ 48.965447] __common_interrupt: 1.35 No irq handler for vector
[ 51.174065] mmc0: error -110 doing runtime resume
[ 54.978088] I/O error, dev mmcblk0, sector 21479 op 0x1:(WRITE) flags 0x0 phys_seg 11 prio class 0
[ 54.978108] Buffer I/O error on dev mmcblk0p1, logical block 19431, lost async page write
[ 54.978129] Buffer I/O error on dev mmcblk0p1, logical block 19432, lost async page write
[ 54.978134] Buffer I/O error on dev mmcblk0p1, logical block 19433, lost async page write
[ 54.978137] Buffer I/O error on dev mmcblk0p1, logical block 19434, lost async page write
[ 54.978141] Buffer I/O error on dev mmcblk0p1, logical block 19435, lost async page write
[ 54.978145] Buffer I/O error on dev mmcblk0p1, logical block 19436, lost async page write
[ 54.978148] Buffer I/O error on dev mmcblk0p1, logical block 19437, lost async page write
[ 54.978152] Buffer I/O error on dev mmcblk0p1, logical block 19438, lost async page write
[ 54.978155] Buffer I/O error on dev mmcblk0p1, logical block 19439, lost async page write
[ 54.978160] Buffer I/O error on dev mmcblk0p1, logical block 19440, lost async page write
[ 54.978244] mmc0: card aaaa removed
[ 54.978452] FAT-fs (mmcblk0p1): FAT read failed (blocknr 4257)
There's interrupt immediately raised on rtsx_pci_write_register() in
runtime resume routine, but the IRQ handler hasn't registered yet.
So we can either move rtsx_pci_write_register() after rtsx_pci_acquire_irq(),
or just stop mangling IRQ on runtime PM. Choose the latter to save some
CPU cycles.
Fixes: 5b4258f672 ("misc: rtsx: rts5249 support runtime PM")
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
BugLink: https://bugs.launchpad.net/bugs/1951784
Link: https://lore.kernel.org/r/20211126003246.1068770-1-kai.heng.feng@canonical.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'v5.13-rc6' into char-misc-next
We need the fixes in here as well.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
aspm (Active State Power Management)
rtsx_comm_set_aspm: this function is for driver to make sure
not enter power saving when processing of init and card_detcct
ASPM_MODE_CFG: 8411 5209 5227 5229 5249 5250
Change back to use original way to control aspm
ASPM_MODE_REG: 5227A 524A 5250A 5260 5261 5228
Keep the new way to control aspm
Fixes: 121e9c6b5c ("misc: rtsx: modify and fix init_hw function")
Reported-by: Chris Chiu <chris.chiu@canonical.com>
Tested-by: Gordon Lack <gordon.lack@dsl.pipex.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Ricky Wu <ricky_wu@realtek.com>
Link: https://lore.kernel.org/r/20210607101634.4948-1-ricky_wu@realtek.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch fixes a trivial mistake that I made in the previous attempt
in fixing the null bridge issue. The branch condition is inverted and we
should call alcor_pci_find_cap_offset() only if bridge is not null.
Reported-by: Colin Ian King <colin.king@canonical.com>
Fixes: 3ce3e45cc3 ("misc: alcor_pci: fix null-ptr-deref when there is no PCI bridge")
Signed-off-by: Tong Zhang <ztong0001@gmail.com>
Link: https://lore.kernel.org/r/20210522043725.602179-1-ztong0001@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
There is an issue with the ASPM(optional) capability checking function.
A device might be attached to root complex directly, in this case,
bus->self(bridge) will be NULL, thus priv->parent_pdev is NULL.
Since alcor_pci_init_check_aspm(priv->parent_pdev) checks the PCI link's
ASPM capability and populate parent_cap_off, which will be used later by
alcor_pci_aspm_ctrl() to dynamically turn on/off device, what we can do
here is to avoid checking the capability if we are on the root complex.
This will make pdev_cap_off 0 and alcor_pci_aspm_ctrl() will simply
return when bring called, effectively disable ASPM for the device.
[ 1.246492] BUG: kernel NULL pointer dereference, address: 00000000000000c0
[ 1.248731] RIP: 0010:pci_read_config_byte+0x5/0x40
[ 1.253998] Call Trace:
[ 1.254131] ? alcor_pci_find_cap_offset.isra.0+0x3a/0x100 [alcor_pci]
[ 1.254476] alcor_pci_probe+0x169/0x2d5 [alcor_pci]
Co-developed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Tong Zhang <ztong0001@gmail.com>
Link: https://lore.kernel.org/r/20210513040732.1310159-1-ztong0001@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch removes unneeded return variables, using only
'0' instead.
It fixes the following warning detected by coccinelle:
./drivers/misc/cardreader/rtsx_pcr.c:1808:5-8: Unneeded variable: "ret".
Return "0" on line 1833.
Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: Yang Li <yang.lee@linux.alibaba.com>
Link: https://lore.kernel.org/r/1612164640-84541-1-git-send-email-yang.lee@linux.alibaba.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
- Initial support for SD express card/host
MMC host:
- mxc: Convert the driver to DT-only
- mtk-sd: Add HS400 enhanced strobe support
- mtk-sd: Add support for the MT8192 SoC variant
- sdhci-acpi: Allow changing HS200/HS400 driver strength for AMDI0040
- sdhci-esdhc-imx: Convert the driver to DT-only
- sdhci-pci-gli: Improve performance for HS400 mode for GL9763E
- sdhci-pci-gli: Reduce power consumption for GL9755
- sdhci-xenon: Introduce ACPI support
- tmio: Fix command error processing
- tmio: Inform the core about the max_busy_timeout
- tmio/renesas_sdhi: Support custom calculation of busy-wait time
- renesas_sdhi: Reset SCC only when available
- rtsx_pci: Add SD Express mode support for RTS5261
- rtsx_pci: Various fixes and improvements for RTS5261
MEMSTICK:
- Minor fixes/improvements.
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Merge tag 'mmc-v5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc
Pull MMC updates from Ulf Hansson:
"MMC core:
- Initial support for SD express card/host
MMC host:
- mxc: Convert the driver to DT-only
- mtk-sd: Add HS400 enhanced strobe support
- mtk-sd: Add support for the MT8192 SoC variant
- sdhci-acpi: Allow changing HS200/HS400 driver strength for AMDI0040
- sdhci-esdhc-imx: Convert the driver to DT-only
- sdhci-pci-gli: Improve performance for HS400 mode for GL9763E
- sdhci-pci-gli: Reduce power consumption for GL9755
- sdhci-xenon: Introduce ACPI support
- tmio: Fix command error processing
- tmio: Inform the core about the max_busy_timeout
- tmio/renesas_sdhi: Support custom calculation of busy-wait time
- renesas_sdhi: Reset SCC only when available
- rtsx_pci: Add SD Express mode support for RTS5261
- rtsx_pci: Various fixes and improvements for RTS5261
MEMSTICK:
- Minor fixes/improvements"
* tag 'mmc-v5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc: (72 commits)
dt-bindings: mmc: eliminate yamllint warnings
mmc: sdhci-xenon: introduce ACPI support
mmc: sdhci-xenon: use clk only with DT
mmc: sdhci-xenon: switch to device_* API
mmc: sdhci-xenon: use match data for controllers variants
dt-bindings: mmc: Fix xlnx,mio-bank property values for arasan driver
mmc: renesas_sdhi: populate hook for longer busy_wait
mmc: tmio: add hook for custom busy_wait calculation
mmc: tmio: set max_busy_timeout
dt-bindings: mmc: imx: fix the wrongly dropped imx8qm compatible string
mmc: sdhci-pci-gli: Disable slow mode in HS400 mode for GL9763E
mmc: sdhci: Use more concise device_property_read_u64
memstick: r592: Fix error return in r592_probe()
mmc: mxc: Convert the driver to DT-only
mmc: mxs: Remove the unused .id_table
mmc: sdhci-of-arasan: Fix fall-through warnings for Clang
mmc: sdhci-pci-gli: Reduce power consumption for GL9755
mmc: mediatek: depend on COMMON_CLK to fix compile tests
mmc: pxamci: Fix error return code in pxamci_probe
mmc: sdhci: Update firmware interface API
...
rtsx_pcr:
add callback functions to support runtime PM
add delay_work to put device to D3 after idle
over 10 sec
rts5249:
add extra init flow for rtd3 and set rtd3_en from
config setting
rtsx_pci_sdmmc:
child device support autosuspend
Signed-off-by: Ricky Wu <ricky_wu@realtek.com>
Link: https://lore.kernel.org/r/20201202065857.19412-1-ricky_wu@realtek.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
changed rtsx_pci_disable_aspm() to rtsx_disable_aspm()
do not access ASPM configuration directly
changed pcie_capability_write_word() to _clear_and_set_word()
make sure only change PCI_EXP_LNKCTL bit8
make sure ASPM disable after extra_init_hw()
Signed-off-by: Ricky Wu <ricky_wu@realtek.com>
Link: https://lore.kernel.org/r/20201202063228.18319-1-ricky_wu@realtek.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch fix clock timing for RTS5261, using 256 divide
for the version higher than version C.
Signed-off-by: Rui Feng <rui_feng@realsil.com.cn>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/1604397321-3026-1-git-send-email-rui_feng@realsil.com.cn
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This patch check mmc support when RTS5261 initialize,
and not support mmc default.
Signed-off-by: Rui Feng <rui_feng@realsil.com.cn>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/1604397298-2921-1-git-send-email-rui_feng@realsil.com.cn
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This patch fix the bug that when there is over current but
reader can't enable OCP.
Signed-off-by: Rui Feng <rui_feng@realsil.com.cn>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/1604397278-2815-1-git-send-email-rui_feng@realsil.com.cn
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This patch add test mode for RTS5261.
If test mode is set, reader will switch to SD Express mode
mandatorily, and this mode is used by factory testing only.
Signed-off-by: Rui Feng <rui_feng@realsil.com.cn>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/1604397269-2780-1-git-send-email-rui_feng@realsil.com.cn
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
RTS5261 support SD mode and PCIe/NVMe mode. The workflow is as follows.
1.RTS5261 work in SD mode and set MMC_CAPS2_SD_EXP flag.
2.If card is plugged in, Host send CMD8 to ask card's PCIe availability.
3.If the card has PCIe availability and WP is not set, init_sd_express() will be invoked,
RTS5261 switch to PCIe/NVMe mode.
4.Mmc driver handover it to NVMe driver.
5.If card is unplugged, RTS5261 will switch to SD mode.
Signed-off-by: Rui Feng <rui_feng@realsil.com.cn>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/1603936668-3363-1-git-send-email-rui_feng@realsil.com.cn
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
v4:
split power down flow and power saving function to two patch
v5:
fix up modified change under the --- line
Add rts522a L1 sub-state support
Save more power on rts5227 rts5249 rts525a rts5260
Fix rts5260 driving parameter
Signed-off-by: Ricky Wu <ricky_wu@realtek.com>
Link: https://lore.kernel.org/r/20200907100731.7722-1-ricky_wu@realtek.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
When mfd_add_devices() fail, pcr->slots should also be freed. However,
the current implementation does not free the member, leading to a memory
leak.
Fix this by adding a new goto label that frees pcr->slots.
Signed-off-by: Keita Suzuki <keitasuzuki.park@sslab.ics.keio.ac.jp>
Link: https://lore.kernel.org/r/20200909071853.4053-1-keitasuzuki.park@sslab.ics.keio.ac.jp
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Drivers should not use legacy power management as they have to manage power
states and related operations, for the device, themselves. This driver was
handling them with the help of PCI helper functions like
pci_save/restore_state(), pci_enable/disable_device(), etc.
With generic PM, all essentials will be handled by the PCI core. Driver
needs to do only device-specific operations.
The driver was also using pci_enable_wake(...,..., 0) to disable wake. Use
device_wakeup_disable() instead.
Compile-tested only.
Signed-off-by: Vaibhav Gupta <vaibhavgupta40@gmail.com>
Link: https://lore.kernel.org/r/20200720101722.145211-1-vaibhavgupta40@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
When reading registers defined by the PCIe spec, use the names already
defined by the PCI core. This makes maintenance of the PCI core and
drivers easier. No functional change intended.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/r/20200721212336.1159079-6-helgaas@kernel.org
[ additional replacements due to changes in my tree - gregkh ]
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Instead of hard-coding the location of the L1 PM Substates capability based
on the Device ID, search for it in the extended capabilities list. This
works for any device, as long as it implements the L1 PM Substates
capability correctly, so it doesn't require maintenance as new devices are
added. No functional change intended.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/r/20200721212336.1159079-5-helgaas@kernel.org
[ minor addition due to differences in my tree - gregkh]
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Tom Rix